I'm not shocked by that rumour. It is clear Brodeur wants a deal. He has been saying these BS quotes since 8 games into the year when Cory was originally given the starting job. "Maybe I can help the team by being moved"..and so on.
Brodeur doesn't sound sentimental at all with these rumours. He's very calm and in control, and it seems to me he is 100% the driving force. Lou has always had 0% percent interest in ever trading Brodeur, and Marty makes it seem like he has no clue what will happen. The only thing he doesn't know is if Lou will actually pull the trigger on his request. He's not saying that and really boxing Lou in.
It's a shame that Brodeur can't except he isn't a starter anymore. He has no interest in being a backup..that's fine. But you want to be a soon-to-be 42-year-old goalie who gets to play a lot...when all the stats say you have been as bad as any NHL goalie over the last 3 seasons. Just can't happen. Having said that...it's for the best that he goes now with that attitude. The only issue is you have a GM that doesn't want to make it happen.
I think you are overdoing the Brodeur hate. On one hand you don't want Marty to say anything to the media about a possible trade and then on the other, you don't like that he is acting as if "he has no clue what will happen."
Next, as far as 'boxing Lou in' goes, that's a bit of an exaggeration. I'm sure Lou doesn't feel like his hand is forced, he will make the decision that is best for the team.
Most of all, I don't see what your big gripe is with Marty's 'attitude'. He has made it pretty clear he may not be able to go to a team that gives him a starting job - just the chance to play a bit more. He has also made it clear that he knows the Devils are not going to get much back for him.
Marty still wants to play - and believes he can. Why is that such a crime? Wouldn't it be way worse if he stuck around and demanded playing time from Pete publicly and caused a whole fiasco? But instead, Marty accepts that Cory starting is best for the team and is willing to go somewhere else to play a bit more. It's Marty's life and career and if he wants to keep playing and is still willing to be accommodating, I see no harm in anything he is doing. He could very easily come out and make this ugly, perhaps go to the media and say "After everything I've done for this team, and being a hall of fame goalie," etc... Instead, even though he has more wins than any goalie ever, he just kind of acts like it's completely normal business that he could be moved.